Steam-shovel support.



PATBNTBD JAN. 2

L. P. MARTIN.

'STEAM SHOVEL SUPPORT.

APPLICATION FILED OCT. 26, 1905.

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To all whom it may concern.-

UNITED STATES PATENT .oEEIoE LUDOLPHl P. MARTIN, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS- CHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented J' an. 23, 1906.

Application filed October 26, 1905. Serial No. 284.427.

Be it known that I, LUDoLPH P. MARTIN, a citizen of the United States, residin at Milwaukee, in the county of Milwau ee and State of Wisconsin, have invented certain new and useful Improvements in Steam- Shovel Supports, of which the following is a specification.

This invention relates to means for maintaining two elements in spaced relation.

This invention has utility in structures wherein variation of the load tends to cause a tilting of the sup ortin platform or base. With steam-shove s wor ring in soft soil the j ack-arms do not have a firm foundation, and accordingly in operation tilting results, ermittin excessive load on the lower side o the car-bo y or base. This unusual strain is a source of danger to the truck. The holding device herein disclosed positively saves the truck-framework from such injury durin the operation of the shovel by taking" they oad from the base directly, onto the wheels and maintaining a spaced relation between the wheels and base.

Referring to the drawings, Figure 1 is a side elevation, and Fig. 2 an end view of an 'able from side to side.

embodiment of thel invention.

The car-body 1 is mounted upon body-bolsters 2, carried by the truck-frame 3 in the usual manner. The truck-frame 3 has mounted therein the wheels 4, having axle 5 engaging the frame. Movable wedge-blocks 6 are carried by guides 7, mounted upon the carbody or base 1. These blocks 6 engage the wheel-tn l and are slid into the guides 7, and then" end plates 8 are bolted in osition, thus preventing the blocks from wor out. Engaging each pair .of blocks is a rod 9, igreely passing through openings therefor .in the ody-bolster. This rod 9 is reversely screwthreaded, so that by rotation it will simultaneously actuate. the blocks toward or from -each other. This rod 9 is shown with squared ends, so that a wrench may be used to turn it. However, it may be actuated by any other meanslfor instance, geared up to be driven by machinery.

The base 1y may have mounted upon it a steam-shovel orbe subjected to a load change- The body-bolster being mediallvsupported normally permits a rocking of his tiltable base.. To prevent this tilting, means areinterposed to maintain the base in spaced relation from the wheels. As herein shown, this means comprises the blocks 6. It is to be noted that any change in the an ular relation of the truck-frame to the base oes not affect the operation of the spacing device, for the rod 9 being loosely mounted is lon itudinally. movable and will permit the blos to ride into position and press with equal force a ainst each u heel.

What is claimed, and itis desired to secure by Letters Patent, is-

1. A holding devicev comprising a base, a

rollable member and means operable be-v tween the member and'base to maintain a fspaced relationtherebetween.

2. A holding device comprising a base, a

wheel, and means to engage the wheel and maintain the base in position.

3. A base, members movablysupporting the base, and means operable between the member and baseto maintain the distance therebetween.

4. A tiltable base, rollable members having axles, and means on the base to take the tilting strain off the axles.

5. A base, rollable members having treads, n

and means operable on the treads to maintain the base in position.

6. A base, a pair of wheels and a pair of blocks to engage the wheels and base.

7. A base, a air of wheels, a pair of blocksl the locks and wheels engaged by t e blocks. 11. A base, a frame medially supporting the base, and means positively preventing tilting of the base on the frame.

In testimony whereof I affix my signature in presence of two witnesses.

' LUDOLPH P. MARTIN.

Witnesses: l

JOHN DAY, Jr., .v- R. M. STONE.

nallyJf-movable rod, a base having gui es for4 IOO 

